<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>邮件示例</title>
</head>
<body>

    <p>欢迎你， <span style="color: red;" th:text="${username}"></span> !</p>

</body>
</html>